utils/github: take last artifact rather than first
utils/github: take last artifact rather than first

JCount/brew,Homebrew/brew,nandub/brew,nandub/brew,nandub/brew,MikeMcQuaid/brew,JCount/brew,MikeMcQuaid/brew,Homebrew/brew,Homebrew/brew,JCount/brew,MikeMcQuaid/brew,JCount/brew,MikeMcQuaid/brew,nandub/brew,Homebrew/brew